Guide plate and retention integrated jaw prosthesis

Abstract

A guide plate and retention integrated jaw prosthesis comprises a fibula prosthesis base body and a 3D printing prosthesis, the surface of the other side, opposite to the surface matched with the defect position, of the fibula prosthesis base body is connected with the 3D printing prosthesis, and the 3D printing prosthesis comprises a prosthesis body part, a retention body and an auxiliary retention body; the prosthesis body part is of a 3D printed net-shaped structure, retainers are arranged at the two transverse ends of the prosthesis body part, auxiliary retainers which extend in the transverse direction and are connected with the retainers at the two ends are arranged on the outer side of the side, making contact with the fibula prosthesis base body, of the prosthesis body part, and the retainers and the auxiliary retainers are provided with retaining holes used for fixing screws.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the clinical field of stomatognathic surgery, and particularly relates to a guide plate retention integrated jaw bone repair body. BACKGROUND

[0002] Jaw bone defects caused by trauma, tumors, infections and other factors not only affect the normal physiological function of patients, but also cause facial deformity, affect the functions such as mastication, swallowing and speech of patients, and seriously affect the mental health of patients. The repair and reconstruction of jaw bone defects have long been a great challenge in clinical practice. At present, autologous bone transplantation, allogeneic bone transplantation, distraction osteogenesis and artificial replacement material repair methods have been applied in clinical practice, but their application is still greatly limited due to problems such as complex surgery, limited material sources and rejection.

[0003] For mandibular segmental defects, autologous bone transplantation is still the gold standard for defect repair. The fibula is the most commonly used autologous bone source for mandibular defect repair at present because of its sufficient length, easy preparation and shaping, and relatively stable vascular pedicle. However, compared with the mandible, the autologous bone is insufficient in height, which cannot well support the facial appearance and support the implant denture for functional repair. Although the application of bilateral fibula flap technology has improved the above shortcomings to some extent in recent years, the high surgical difficulty and high possibility of complications have limited its popularization and application.

[0004] Titanium alloy repair bodies prepared by simple 3D printing technology have become a research hotspot in recent years because they not only can perfectly match the shape of damaged bones, but also have good mechanical properties. However, simple titanium alloy implants cannot complete the functional repair of implant dentures. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a guide plate retention integrated jaw bone repair body.

[0006] The technical scheme of the utility model is as follows:

[0007] A guide plate retention integrated jaw bone repair body, characterized in that it comprises a fibula repair body base and a 3D printed repair body, the other side surface of the fibula repair body base opposite to the surface adapted to the defect is connected with the 3D printed repair body, the 3D printed repair body comprises a repair body body, a retention body and an auxiliary retention body, the repair body body is a 3D printed mesh structure, the transverse two ends thereof have the retention body, the outer side of the side in contact with the fibula repair body base has the auxiliary retention body of the retention body extending along the transverse direction and connecting the two ends, and the retention body and the auxiliary retention body have retention holes for screw fixation.

[0008] Preferably, the mesh structure is a bone trabecula structure of titanium alloy.

[0009] Further preferably, the wire diameter of the net structure is 0.3-0.6mm, the hole diameter is 0.5mm-5mm, the thickness is 1-2cm, and the height is 1-1.5cm.

[0010] Preferably, the thickness of the retainer is 0.3-0.5mm.

[0011] Preferably, the diameter of the retaining hole is 2.0mm.

[0012] The beneficial effects of the present application are as follows:

[0013] The present application is a guide plate and retainer integrated jaw bone repair body, which, on the basis of the fibula repair body base, supplements a 3D printed repair body, and can realize the following functions:

[0014] 1. The 3D printed titanium alloy net-shaped repair body can play a role of surface support, and the shape can realize complete matching with the original mandible, solving the problem of insufficient height when only using fibula autograft;

[0015] 2. It can serve as a positioning guide plate when fibula transplantation is in place;

[0016] 3. The retainer and the auxiliary retainer can realize the function of retaining the mandible, the 3D printed repair body and the fibula;

[0017] 4. The titanium net inside the repair body is a three-dimensional structure similar to bone trabeculae, which is beneficial to postoperative bone repair. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of Example 1;

[0019] The column formula of each number in the figure is as follows:

[0020] 1-fibula repair body base, 2-3D printed repair body, 3-repair body body, 4-retainer, 5-auxiliary retainer, 6-retaining hole, 7-jaw bone. DETAILED DESCRIPTION

[0021] In order to better understand the present application, the present application will be specifically described by examples. It is necessary to point out here that the following examples are only used to further illustrate the present application, and cannot be understood as limiting the protection scope of the present application. Some non-essential improvements and adjustments made by the professional technicians in this field according to the content of the above-mentioned present application still belong to the protection scope of the present application.

[0022] Example 1

[0023] As Figure 1As shown, a guide plate retention integrated jaw bone repair body includes a fibula repair body base 1 and a 3D printed repair body 2, the present embodiment is for the repair of the mandible, the lower surface of the fibula repair body base 1 is connected with the 3D printed repair body 2, the 3D printed repair body 2 includes a repair body body 3, a retention body 4 and an auxiliary retention body 5, the repair body body 3 is a 3D printed mesh structure, the lateral ends thereof have the retention body 4 connected with the jaw bone 7, the outer side of the side in contact with the fibula repair body base 1 has the auxiliary retention body 5 connected with the lateral ends of the retention body 4 extending in the lateral direction, the auxiliary retention body simultaneously connects the fibula repair body base 1 and the 3D printed repair body 2, the retention body 4 and the auxiliary retention body 5 have retention holes 6 for screw fixation.

[0024] The mesh structure is a bone trabecula structure of titanium alloy. It is beneficial to the later osteogenic repair. Further preferably, the wire diameter of the mesh structure is 0.5 mm, the hole diameter is 2 mm, the thickness is 1 cm and the height is 1 cm. The thickness of the retention body is 0.4 mm. The diameter of the retention hole is 2.0 mm.

[0025] The 3D printed titanium alloy mesh repair body can play a role of facial support according to the degree of actual defect and the shape of the fibula used, so that the overall repair body shape can realize complete matching with the original mandible, solving the problem of insufficient height when only using fibula autograft; meanwhile, it can also serve as a positioning guide plate when the fibula is transplanted in place.

[0026] The mutual cooperation of the retention body and the auxiliary retention body can realize the mutual retention function of the mandible, the 3D printed repair body and the fibula.

[0027] The above is only a preferred embodiment of the present application, and is not intended to limit the application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments, but any simple modification, equivalent change and modification of the above embodiments without departing from the technical scheme of the present application, according to the technical essence of the present application, still belongs to the protection scope of the present application.

Claims

1. A guide-retainer integrated jaw-repair body, characterized by The fibula repair body base opposite to the surface adapted to the surface of the defect is connected with the 3D printed repair body, the 3D printed repair body comprises a repair body body, a retainer and an auxiliary retainer, the repair body body is a 3D printed mesh structure, the lateral ends of the mesh structure have the retainers, the outer side of the side in contact with the fibula repair body base has the auxiliary retainers of the retainers extending along the lateral direction and connecting the two ends, the retainers and the auxiliary retainers have retainer holes for screw fixation.

2. The guide-retainer integrated jaw-repair body of claim 1, wherein The mesh structure is a bone trabecula structure of titanium alloy.

3. The guide-retainer integrated jaw-repair body of claim 2, wherein The wire diameter of the mesh structure is 0.3-0.6mm, the hole diameter is 0.5mm-5mm, the thickness is 1-2cm, and the height is 1-1.5cm.

4. The guide-retainer integrated jaw-repair body of claim 1, wherein The thickness of the retainer is 0.3-0.5mm.

5. The guide-retainer integrated jaw-repair body of claim 1, wherein The diameter of the retainer hole is 2.0mm.

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